How many files does it take to make a very basic java page? Can it be just one file which is run off a hard drive?I want to connect to a SQL server and update records only
View RepliesI have to be able to read files that have been serialized in VB. 2 things, 1 they are serialized in Binary, and I tried to look up on how to serialize/deserialize in Binary, but didn't have much support...
Also in the VB code they talk about "TYPES" which seems to be to just be a class full of stuff...
Is there a way to reload the page after uploading the files with the command
<p:fileUpload value="#{excursion_type.main_photo}" mode="advanced" allowTypes="/(.|/)(gif|jpe?g|png)$/" auto="false"
fileUploadListener="#{excursion_type.uploadMultiple}" update="msg" />
Cause the user does not see the lattest photos after uploading need to do reload to see them cause ajax request.
I can now call the DB on the query I want and return results. What I know want to do is build an array of the data, forward it to the JSP page and display the bits individually.
So THis is the Servlet I havce:
package com.journaldev.jdbc.datasource;
import java.awt.List;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
[code]...
I think It is to do either with the way I am adding the values to User or its the forward:
getServletConfig().getServletContext().getRequestDispatcher("/test.jsp").forward(request, response);
I am trying to make a Library that will read some Input Files from a File . Like When We Enter Nuber from a System.in
1
2
45
667
77
34
and then store these values in int[] array
What I want is I Save all these values in a File and at Run time pass path of that file to command line arguments and then int[] array will be initialize using that
something like this [URL]
i can't make the [JfileChooser] save text file instead of opening files.that [ComboBox] always don't show me the items that i have inserted in eclipse.
View Replies View Related I am currently working on a application for a car park system. It uses GUI created by myself and holds 15 parking spaces. The user has the option to add, delete or search for a specific car. When the user adds a new car, details of the car are entered, the cars registration number (saved as a string), and the user had to check one raido button if the car is expensive, large or normal.
Once this information is entered a new instance of a vehicle will be created and the bay the car is allocated to turns green and stored in one of three arrays(expensive, normal or large). I also have a fourth array for creating the parking spaces.Each array can only hold 5 vehicles apart from the fourth which can hold all 15. When searching for a vehicle the user enters the registration of the vehicle they want to find, but I have to search through all three arrays to find it, and if it does not exist showing a message saying so.These are my three arrays
public static ParkingBay[] regularBays = new ParkingBay[5];
public static ParkingBay[] largeBays = new ParkingBay[5];
public static ParkingBay[] expensiveBays = new ParkingBay[5];
String Registration; - saves registration entered from add form
String RegistrationNumber; - saves registration number from search form
I need to search to see if RegistrationNumber is in either of the three arrays if not show a message saying otherwise
What step to know to develop software..
View Replies View RelatedBasic console java program. I need to generate an employee id. I have an employee class that I will paste here so you can see my fields and constructors.
public class Employee {
private String firstName;
private String lastName;
private int id;
public int nextUniqueId = 0;
public Scanner sc = new Scanner(System.in);
[Code] ....
How can i write a java program that simulate a simple calculator that performs the basic arithmetic operations of JAVA. (JOption Pane and Repeat control structure)
Example : Addition, Subtraction, Multiplication, Division.
The program will prompt to input two floating point numbers and a character that represents the operations presented above. In the event that the operator input is valid, prompt the user to input the operator again.
Sample Output :
First number 7
Second number 4
Menu
<+> Addition
<-> Subtraction
<*> Multiplication
</> Division
Enter Choice: * <enter>
The answer is 28.
I have to implement a system where I have to do almost same processing on a jsp page. The slight differences on the present page is based on whether the current page came from page 1 or page 2. So how can I do this?
View Replies View RelatedI have a xhtml file that initialization it with ui:repeat tag in realtime.all tags of this page placed under ui:fragment tag.
<edges>
<ui:repeat value="#{graphInfoBean.edges}" var="edge" varStatus="indexVar">
<edge id="#{indexVar.index}" source="#{edge.source}" target="#{edge.target}"
weight="#{edge.weight}">
[Code] ....
When i access to this page and save it as xml in realtime, the tags in xml file saved is empty while it is initialized and everything is working properly.
<edges>
</edges>
How can i access to content of this xhtml page and save it on disk?
Code for login page by java and how we can implement it.
View Replies View RelatedI want to access variable of java file into jsp Page. So I tried to do this but it does not work.
Problem : when I am trying to access "getName" method of java class into jsp file it displaying error, i already imported "Ajaxmethod.java" file in to "success.jsp" I want to access "getName" method in to jsp file without creating object of class.
Ajaxmethod.java
package a.b;
public class Ajaxmethod implements Action{
public String name;
public String getName() {
return name;
}
[Code]...
How to put text box in Web form in Java swing page
View Replies View RelatedI want to execute a class from src folder in JSP page. But i have receiving the error only..,
Java Code:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@page import="ServerInitiator" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
[Code] ....
My package structure is :
I have try by using the above, is their any perfect way to call this..
// MY login.jsp class
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<jsp:useBean id="person" scope = "request" class = "com.za.tutotial.mvc.PersonBeanModel"/>
[Code] ....
My project consists of a web app where a user can select a area from a picture and f.e. if it is a office layout he can input the worker name and any peace of hardware that the area might have. In this case there are two categories: Hardware and Computer. Hardware - it has 5 dropdown lists consisting of printer, scanner and etc. Computer - like Hardware consists of many dropdown lists which add up to components such as processor, motherboard and etc. For me, considering this is my first ever web app project, is a huge step towards web development, I have used various mixes of Java, javascript and primefaces code.
My current problem: When a user selects an area he gets a dialog box where he is prompted to select his desired input, afterwards the user clicks the 'save' button and get's another dialogbox which has a resume of what he has selected so he could check out his input and save it by clicking the 'save' button in the resume box. My problem is that when the user clicks the save button the button calls a method which takes all the input and creates an Area object (Area object consists of various objects such as: Coordinates, Dimensions, Employee, ComputerList and HardwareList) and sends a query to the database, but all the values I get is null.
XHTML code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.org/ui">
[Code] ....
I was looking at the Sound API pages in the java tutorials. I was planning to use it to run wma files. Fortunately, for me, I found, soon into the tutorials, that these API DON'T support the type I have all of my files in (I have a ton of wma files but none of the libraries mentioned support them.)
I almost thought I heard JavaFx or whatever it's called does, but that sounds foreign and Netbeans lists it as a separate type of java in a way, so I don't know if it would be cross-platform or if it could work with the JavaSE API.) Nor do I know what JavaSX or whatever it's called is really, other than that it's more for internet than application.
If I wanted a JPanel or Applet acting as the content pane of a JFrame or being in a JFrame, could I use JavaFX (or whatever it's called) or some third party library (that I always tend to end up spending hours on trying to get it to find the jar files when I import them, so I hope I don't need too many jar files!!!! ) would it work with the JavaSE API?
I don't know much about Java and playing sounds (other than that there is a static method, I think under Toolkit, that will play a system beep) with programs.
However, I can see that that packages don't support certain types (so much for cross-platform!!!!!!! ) and also that a while back that Oracle took over and that they aren't really updating the Java Sound APIs really that much at all
So, without having to learn a whole new Java set of standards (assuming JavaFX or whatever it's called is a different set of standards from JavaSE), is there a way to play .wma?
That's all I seem to have on my computer.
(I suppose I could create new sounds, though if Oracle isn't updating the library, who knows if even that works anymore, but if you're trying to run a Java Media Player that runs lots of DIFFERENT sound file types, this seems a real setback. )
I heard you could convert them to MP3s (I heard there were free things that did it, but who knows if the things aren't filled with viruses that'll do it or, even if they're not, that they'll really mess up the quality of the sound and that I might lose the old .wma file in the process even if it doesn't corrupt the sound.)
But, even if I get a .mp3, I heard the main JavaSE libraries DON'T cover that either, though it was said it was easier to make it run them than .wma files.
MediaPlayer and the main JavaSE classes don't seem to be able to fit for this type of program (a java media player) that I was planning. Heck, they can't even play any music I have on my computer at all, media player or not.
I have made a program on BlueJ but need to transfer the class to a pen drive so that I can take it to school and show it to my teacher. How is this done
View Replies View RelatedI have a batch of files that I want to remove a common word from all of their filenames. I think I could bash my way through this if I had a linux machine, but I don't. Any tips on what classes I need for the files I want to rename (if any) would be great. I can handle the string changes, but searching a directory and renaming files is something I've never done with code before.
View Replies View RelatedMy friend has a youtube channel with 50.000 - 100.000 subscribers. I dont know the exact amount but he asked me to make a program for his subscribers. I made it in Java and it works perfectly fine but now i want to make it secure so people can't decompile it and read/change the code. Because ofcourse he also has viewers who can hack programs.
But i dont know how i can do that. I dont want to make the code hard to read. I already heard about program which adds lines of code without doing anything actually and programs making the code a lot more complicated. But thats not what i want, i want to make the Class files undecompilable so people cant decompile it to Java files again and read the code.
I know this is possible, Runescape for example is written in Java too and secured good enough in my opinion. I know there are fake Runescape games called private servers or something like that. But its not easy as downloading the game, decompiling it, connecting it to another server and you're done. A little kid can do that but i think its even possible that people just programmed Runescape again from scratch.So i want to make my program very hard to decompile or even impossible, i want it as impossible as possible.
I'v tried everything, i'v tried to create new path in enviornment variables i tried adding this path -->(C:Program FilesJavajdk1.8.0_20bin) to the end of the default path doesnt work i uninstalled and reinstalled and did the same thing over and it didnt work am i editing the files wrong ? what i do is write the hello world program in eclipse to make sure there arent any errors then copy and paste in note pad++ save it as a .java file and it doesnt work i tried save it in regular notepad as .java laso and it doesnt work iv done every thing i could possibly find on youtube is this stuff outdated ? is there a new way? this one one of the errors ill get
C:javat>javac helloworld.java
helloworld.java:1: error: '{' exp
public class helloworld.java {
^
And this is the code for that file im trying to compile
public class helloworld.java {
public static void main (String args[]){
System.out.println("hello world");
}
}
I have two jsp page one is demo1.jsp and other is demo2.jsp on a click of a particular link on demo1.jsp I want to opwn demo2.jsp inside demo1.jsp without changing layout of demo1.jsp..I tried to use <jsp;include but that doesn't work for me.But how to do this simply on a single link click on a big page?
View Replies View RelatedOne challenging task in java i am facing is, batch printing of files in java .....
View Replies View RelatedI have seen different methods of creating and reading files (specifically text files) in Java. The PrintWriter method or the Formatter with a Scanner to read the file, using a BufferedWriter with a BufferedReader, etc. They will all read/write text files, but from what I understand they do so in different ways. When would it be more beneficial to use a buffered writer than, say, PrintWriter, which is much simpler code-wise? Is there a "best" way to handle i/o in general in Java?
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